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Title: Proof without words: sum of a row in Pascal’s triangle
Authors: Plaza, Ángel 
UNESCO Clasification: 120504 Teoría elemental de los números
Issue Date: 2017
Journal: College Mathematics Journal 
Abstract: Using Pascal's identity, we visually demonstrate that the sum of entries in a row of Pascal's triangle is a power of two.
ISSN: 0746-8342
DOI: 10.4169/college.math.j.48.3.188
Source: College Mathematics Journal [ISSN 0746-8342], v. 48 (3), p. 188
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